Quarterly report pursuant to Section 13 or 15(d)

Share-based compensation - Narrative (Details)

v3.21.1
Share-based compensation - Narrative (Details) - Plan
3 Months Ended
Mar. 31, 2021
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Granted | shares 62,734
Exercise price | $ / shares $ 7.26
Vesting period 10 years
Aggregate grant date fair value $ 332,652
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]  
Expected life 6 years
Expected dividends $ 0
Minimum  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]  
Discount rates 0.505%
Expected volatility 89.04%
Fair market value | $ / shares $ 6.75
Maximum  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]  
Discount rates 0.59%
Expected volatility 90.16%
Fair market value | $ / shares $ 7.51
Vesting after one year  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting percentage 33.333%
Vesting in 24 monthly installments thereafter  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting percentage 66.667%
Stock options  
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Abstract]  
Share-based compensation expense $ 24,825
Unrecognized compensation expense $ 307,827